You are exposed to loud noises.
Environmental Noise Pollution Threatens Hearing and Health.
Measure noise with your smart phone using this app.
It is easy to use!
This is a Sound Pressure Level Meter.(SPL)
This Sound Meter calculates the Decibel level of the sound.(dBUnit of measurement)

With different phones you get different values of recording parameter measured in decibel (dB).
Some phones will give different sensor readings based on the hardware used by the manufacturer.

Warning)
1. I don't guarantee that this app will work out well. And don't guarantee perfect efficiency(resulteffecteffectiveness).
2. Protect your hearing(health) with exposing loud noises in a noisy environment. Do not use with Excessive Noise!